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Finding the Fourth Proportional to 43,859.87, 65,796.28 and 12,691.07

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Solution

The fourth proportional to 43,859.87, 65,796.28 and 12,691.07 is: 19,038.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,859.87 : 65,796.28 = 12,691.07 : x
  2. Step 2: Convert to fraction form
    43,859.87/65,796.28 = 12,691.07/x
  3. Step 3: Cross multiply
    43,859.87x = 65,796.28 × 12,691.07
  4. Step 4: Simplify right side
    43,859.87x = 835,025,195.22
  5. Step 5: Solve for x
    x = 835,025,195.22/43,859.87
  6. Step 6: Final answer
    x = 19,038.48

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.